Guys you are almost making me want to get this....
Sadly I got L.A. Noire and I want to finish it first. but between Doom and Skyrim?
Different genres, different styles (but both buggy loool).
It depends on what you expect from the games. While one is a heavy rpg, the other is pure action. After having played Doom twice now and currently diving into Skyrim I can only say that both have ups and downs.
Gameplay > Graphics
Substance > Style
Art Direction > Realism